Today's high and low tide times for Belfast, Northern Ireland, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Belfast, Northern Ireland, the next high tide is at 3:27 AM (12.3ft) and the next low tide is at 9:33 AM (3.1ft), based on harmonic predictions for Portpatrick.
All high and low tides for Belfast today, in local time (Europe/London). Heights are metres above chart datum.
High (H) and low (L) tide times and heights for the next seven days at Belfast.
| Date | Tides (local time · height) |
|---|---|
| Wed, Sep 16 | H 3:27 AM 12.3ftL 9:33 AM 3.1ftH 3:39 PM 12.1ftL 9:51 PM 3.0ft |
| Thu, Sep 17 | H 4:06 AM 11.6ftL 10:12 AM 3.8ftH 4:21 PM 11.2ftL 10:30 PM 3.9ft |
| Fri, Sep 18 | H 4:48 AM 11.0ftL 11:00 AM 4.5ftH 5:09 PM 10.2ftL 11:15 PM 4.8ft |
| Sat, Sep 19 | H 5:36 AM 10.4ftL 12:00 PM 5.1ftH 6:12 PM 9.5ft |
| Sun, Sep 20 | L 12:15 AM 5.5ftH 6:42 AM 10.0ftL 1:18 PM 5.3ftH 7:39 PM 9.1ft |
| Mon, Sep 21 | L 1:33 AM 5.9ftH 8:00 AM 10.0ftL 2:42 PM 5.0ftH 9:03 PM 9.3ft |
| Tue, Sep 22 | L 2:51 AM 5.8ftH 9:09 AM 10.4ftL 3:45 PM 4.4ftH 10:03 PM 9.8ft |
| Wed, Sep 23 | L 3:54 AM 5.3ftH 10:03 AM 11.1ftL 4:33 PM 3.6ftH 10:48 PM 10.6ft |
Predicted for Portpatrick, 58.7 km away (reliability: medium — a moderate distance — local times may differ by 10–30 minutes from the open coast).
These are astronomical tide predictions — the rise and fall driven by the moon and sun, computed by harmonic analysis. They do not include weather effects: a strong onshore wind, low barometric pressure or a storm surge can push the real water level above the predicted high, and offshore winds or high pressure can hold it below the predicted low. For navigation or any safety-critical decision, always check the official tide tables and a live water-level gauge for Belfast.
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